[INFO] fetching crate nothing 0.1.10...
[INFO] testing nothing-0.1.10 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate nothing 0.1.10 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate nothing 0.1.10 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-11/source/rust-toolchain
[INFO] started tweaking crates.io crate nothing 0.1.10
[INFO] finished tweaking crates.io crate nothing 0.1.10
[INFO] tweaked toml for crates.io crate nothing 0.1.10 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate nothing 0.1.10 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f6f1365d05d879d092bb3f71d875d7f98ff74ad840f0c94022022d4d5ab82024
[INFO] running `Command { std: "docker" "start" "-a" "f6f1365d05d879d092bb3f71d875d7f98ff74ad840f0c94022022d4d5ab82024", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6f1365d05d879d092bb3f71d875d7f98ff74ad840f0c94022022d4d5ab82024", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6f1365d05d879d092bb3f71d875d7f98ff74ad840f0c94022022d4d5ab82024", kill_on_drop: false }`
[INFO] [stdout] f6f1365d05d879d092bb3f71d875d7f98ff74ad840f0c94022022d4d5ab82024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5342e62c64590ddf91d5dd49ba77a73bda8f6b33436955c9dc4c30f31f6858a7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5342e62c64590ddf91d5dd49ba77a73bda8f6b33436955c9dc4c30f31f6858a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling pmutil v0.5.3
[INFO] [stderr]    Compiling is-macro v0.2.0
[INFO] [stderr]    Compiling nothing v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> lib.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | #![feature(derive_default_enum)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![feature(try_trait_v2)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> lib.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | #![feature(try_trait_v2)]
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nothing` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "5342e62c64590ddf91d5dd49ba77a73bda8f6b33436955c9dc4c30f31f6858a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5342e62c64590ddf91d5dd49ba77a73bda8f6b33436955c9dc4c30f31f6858a7", kill_on_drop: false }`
[INFO] [stdout] 5342e62c64590ddf91d5dd49ba77a73bda8f6b33436955c9dc4c30f31f6858a7